Influence of Stearic Acid Concentration on the Processing of ZrO2-Containing Feedstocks Suitable for Micropowder Injection Molding

The influence of stearic acid concentration on the processability of polyethylene/wax‐microsized zirconia feedstocks was investigated systematically. Regarding dense and warpage‐free ceramic parts, the addition of stearic acid as a dispersant is crucial for feedstock preparation with at least 50 vol...

Full description

Saved in:

Bibliographic Details
Published in:	International journal of applied ceramic technology 2011-07, Vol.8 (4), p.865-872
Main Authors:	Hanemann, Thomas, Heldele, Richard, Mueller, Tobias, Hausselt, Juergen
Format:	Article
Language:	eng
Subjects:	Binders Ceramics Dispersants Feedstock Homogeneity Injection molding Stearic acid Zirconium dioxide
Online Access:	Request full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The influence of stearic acid concentration on the processability of polyethylene/wax‐microsized zirconia feedstocks was investigated systematically. Regarding dense and warpage‐free ceramic parts, the addition of stearic acid as a dispersant is crucial for feedstock preparation with at least 50 vol% solid loads. A stearic acid concentration of 2.2 mg/m2 (referring to the fillers specific surface area) yields the best feedstock flow properties and homogeneity. Filling studies showed that feedstocks containing 55 vol% of submicrometer‐sized zirconia powder in a polyethylene–wax binder system with 2.2 mg/m2 stearic acid as a dispersant can be processed by micropowder injection molding.
ISSN:	1546-542X 1744-7402